If we follow the installation doc, it says to clone the addon repo inside this dir

which would fail if said dir exist and is not empty.

.gitignore

@@ -72,11 +72,7 @@ venv/
 /.idea
 
 #ignore addons directory
-/addons
 /addon
-# except those:
-!/addons/.gitkeep
-!/addon/.gitkeep
 
 #ignore base .htaccess
 /.htaccess

doc/Install.md

@@ -76,14 +76,6 @@ This makes the software much easier to update.
 The Linux commands to clone the repository into a directory "mywebsite" would be
 
     git clone https://github.com/friendica/friendica.git -b stable mywebsite
-    cd mywebsite
-    bin/composer.phar install --no-dev
-
-Make sure the folder *view/smarty3* exists and is writable by the webserver user, in this case *www-data*
-
-    mkdir -p view/smarty3
-    chown www-data:www-data view/smarty3
-    chmod 775 view/smarty3
 
 Get the addons by going into your website folder.
 
@@ -91,7 +83,17 @@ Get the addons by going into your website folder.
 
 Clone the addon repository (separately):
 
-    git clone https://github.com/friendica/friendica-addons.git -b stable addon
+	git clone https://github.com/friendica/friendica-addons.git -b stable addon
+
+Install the dependencies:
+
+    bin/composer.phar install --no-dev
+
+Make sure the folder *view/smarty3* exists and is writable by the webserver user, in this case *www-data*
+
+    mkdir -p view/smarty3
+    chown www-data:www-data view/smarty3
+    chmod 775 view/smarty3
 
 If you want to use the development version of Friendica you can switch to the develop branch in the repository by running